Flindersia ifflana, commonly known as hickory ash or Cairns hickory,[2] is a species of tree in the family Rutaceae and is native to Papua New Guinea and Queensland.

It has pinnate leaves with between four and twelve egg-shaped to elliptical leaflets, panicles of white or cream-coloured flowers and woody fruit studded with rough points.

Flowering occurs from October to March and the fruit is a woody capsule 32–55 mm (1.3–2.2 in) long, containing seeds that are 27–33 mm (1.1–1.3 in) long.

[2][3] Flindersia ifflana was first formally described in 1877 by Ferdinand von Mueller in Fragmenta phytographiae Australiae from specimens collected by Walter Hill near Trinity Bay.

[4][5] Hickory ash grows in rainforest and is found in Papua New Guinea and in Queensland where it occurs at altitudes between 30 and 900 m (98 and 2,953 ft) from Cape Grenville to near Atherton.